Description
Deserialization of untrusted data in Microsoft Office SharePoint allows an authorized attacker to execute code over a network.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Microsoft | Microsoft SharePoint Enterprise Server 2016 | 16.0.0 – < 16.0.5543.1000 | 16.0.5543.1000 |
| Microsoft | Microsoft SharePoint Server 2019 | 16.0.0 – < 16.0.10417.20102 | 16.0.10417.20102 |
Public exploits
Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.
Third-party code, not reviewed by us. Public PoCs are sometimes fake or contain malware. Read the code first and run it only in an isolated lab, against systems you are authorised to test.
GitHub 2 repositories
-
huynambka/cve-2026-26114-poc ★ 23 · Jul 3, 2026
-
fazilbaig1/CVE-2026-26114-Patch ★ 1 · Aug 3, 2026
patching N-day of CVE-2026-26114 before microsoft. where microsoft could not patch 100% in many months. but FAC security did it
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
Advisories 3
- WID-SEC-2026-0659 Microsoft Office und SharePoint Produkte: Mehrere Schwachstellen BSI CERT-Bund (WID) · Mar 10, 2026
- NCSC-2026-0084 Kwetsbaarheden verholpen in Microsoft Office NCSC-NL (Netherlands) · Mar 10, 2026
- MSRC-CVE-2026-26114 Microsoft SharePoint Server Remote Code Execution Vulnerability Microsoft Security Response Center · Mar 10, 2026
References
- Microsoft SharePoint Server Remote Code Execution Vulnerability vendor-advisory patch